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- Simplify stack size determination: MAX_CPUS * STACK_SIZE

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- Check that this doesn't run into vga/oprom/bios area at link time
- Avoid overly complicated and not well understood hack which avoids that
  area by leaving a hole in the stack area.
- Adapt technexion/tim5690 to put ramstage at 1MB

Signed-off-by: Patrick Georgi <patrick.georgi@coresystems.de>
Acked-by: Myles Watson <mylesgw@gmail.com>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5181 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Patrick Georgi
2010-03-01 17:16:06 +00:00
parent d3b2bbe08c
commit 9d24c7f202
3 changed files with 7 additions and 21 deletions
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18
src/cpu/x86/lapic/lapic_cpu_init.c
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@ -246,25 +246,7 @@ int start_cpu(device_t cpu)
index = ++last_cpu_index;
/* Find end of the new processors stack */
#if (CONFIG_RAMTOP>0x100000) && (CONFIG_RAMBASE < 0x100000) && ((CONFIG_CONSOLE_VGA==1) || (CONFIG_PCI_ROM_RUN == 1))
if(index<1) { // only keep bsp on low
stack_end = ((unsigned long)_estack) - (CONFIG_STACK_SIZE*index) - sizeof(struct cpu_info);
} else {
// for all APs, let use stack after pgtbl, 20480 is the pgtbl size for every cpu
stack_end = 0x100000+(20480 + CONFIG_STACK_SIZE)*CONFIG_MAX_CPUS - (CONFIG_STACK_SIZE*index);
#if (0x100000+(20480 + CONFIG_STACK_SIZE)*CONFIG_MAX_CPUS) > (CONFIG_RAMTOP)
#warning "We may need to increase CONFIG_RAMTOP, it need to be more than (0x100000+(20480 + CONFIG_STACK_SIZE)*CONFIG_MAX_CPUS)\n"
#endif
if(stack_end > (CONFIG_RAMTOP)) {
printk_debug("start_cpu: Please increase the CONFIG_RAMTOP more than %luK\n", stack_end);
die("Can not go on\n");
}
stack_end -= sizeof(struct cpu_info);
}
#else
stack_end = ((unsigned long)_estack) - (CONFIG_STACK_SIZE*index) - sizeof(struct cpu_info);
#endif
/* Record the index and which cpu structure we are using */
info = (struct cpu_info *)stack_end;